CN109014002B - Cold heading die for special-shaped welding bolt and bolt manufacturing method thereof - Google Patents
Cold heading die for special-shaped welding bolt and bolt manufacturing method thereof Download PDFInfo
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- CN109014002B CN109014002B CN201811087278.1A CN201811087278A CN109014002B CN 109014002 B CN109014002 B CN 109014002B CN 201811087278 A CN201811087278 A CN 201811087278A CN 109014002 B CN109014002 B CN 109014002B
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- lower die
- die
- cushion block
- shell
- upper die
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- 238000003466 welding Methods 0.000 title claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 60
- 239000000956 alloy Substances 0.000 claims abstract description 44
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 44
- 239000002994 raw material Substances 0.000 claims abstract description 17
- 238000005520 cutting process Methods 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000004381 surface treatment Methods 0.000 claims description 2
- 206010066054 Dysmorphism Diseases 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
- 238000005553 drilling Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/02—Dies or mountings therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/44—Making machine elements bolts, studs, or the like
Abstract
The invention relates to the field of cold heading dies, in particular to a cold heading die for special-shaped welding bolts and a bolt manufacturing method thereof. Including second process mould, characterized by: the second process die comprises a second upper die and a second lower die, a second lower die second cushion block is arranged below a second lower die shell, the second lower die shell is connected with the second lower die second cushion block through a second lower die nut, a second lower die middle sleeve and a second lower die first cushion block are sequentially embedded in the second lower die shell from top to bottom, a second lower die hard alloy is embedded in the second lower die middle sleeve, and a second lower die core is embedded in the middle of the second lower die first cushion block. Compared with the prior art, the method has the advantages that raw materials are sequentially processed through the four-process die, the process is simplified, each process can be independently processed, the utilization rate is greatly improved, and the processing efficiency is improved.
Description
Technical Field
The invention relates to the field of cold heading dies, in particular to a cold heading die for special-shaped welding bolts and a bolt manufacturing method thereof.
Background
The prior process adopted in the production process of the special-shaped welding bolt is that hot heading is firstly carried out, then turning and drilling are sequentially carried out, and finally the special-shaped welding bolt is obtained. However, this method requires a lot of manpower, and requires a long time without processing a special-shaped welding bolt, and is inefficient and unable to satisfy the tact.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, designs the cold heading die for the special-shaped welding bolt, performs cold heading stamping through the dies with four working procedures, can independently produce each working procedure, and effectively improves the production efficiency of the special-shaped welding bolt.
In order to achieve the above purpose, a cold heading die for special-shaped welding bolts is designed, which comprises a first process die, a second process die, a third process die and a fourth process die, and is characterized in that: the second working procedure die comprises a second upper die and a second lower die, wherein the second upper die consists of a second upper die spring, a second upper die shell, a second upper die cushion block, a second upper die pre-punch and a second upper die core, the second upper die cushion block and the second upper die pre-punch are sequentially embedded in the second upper die shell from top to bottom, the second upper die cushion block is T-shaped, the second upper die spring is sleeved outside the T-shaped bottom of the second upper die cushion block, and the second upper die core is embedded in the middle of the second upper die pre-punch; the second lower die consists of a second lower die hard alloy, a second lower die middle sleeve, a second lower die first cushion block, a second lower die outer shell, a second lower die core, a second lower die nut and a second lower die second cushion block, wherein the second lower die second cushion block is arranged below the second lower die outer shell, the second lower die outer shell is connected with the second lower die second cushion block through the second lower die nut, the second lower die middle sleeve and the second lower die first cushion block are sequentially embedded in the second lower die outer shell from top to bottom, the second lower die hard alloy is embedded in the second lower die middle sleeve, the second lower die core is embedded in the middle of the second lower die first cushion block, the top of the second lower die core sequentially penetrates through the second lower die first cushion block and the second lower die hard alloy from bottom to top, and the bottom of the second lower die core sequentially penetrates through the second lower die first cushion block and the second lower die second cushion block from top to bottom.
The first working procedure die comprises a first upper die and a first lower die, wherein the first upper die consists of a first upper die shell, a first upper die cushion block and a first upper die punch rod, a groove is formed in the top of the first upper die shell, a first upper die cushion block is embedded in the groove, a first upper die punch rod is arranged in the first upper die shell below the first upper die cushion block, and the top of the first upper die punch rod is abutted to the lower surface of the first upper die cushion block; the first lower die comprises a first lower die hard alloy, a first lower die middle sleeve, a first lower die outer shell, a first lower die core, a first lower die nut and a first lower die rear pad, wherein the first lower die middle sleeve and the first lower die rear pad are sequentially embedded in the first lower die outer shell from top to bottom, the first lower die hard alloy is embedded in the first lower die middle sleeve, the first lower die core is embedded in the first lower die hard alloy, the bottom of the first lower die core sequentially penetrates through the first lower die hard alloy and the first lower die rear pad from top to bottom, and the first lower die rear pad is connected with the first lower die outer shell through the first lower die nut.
The third procedure die comprises a third upper die and a third lower die, wherein the third upper die consists of a third upper die shell and a third upper die hard alloy, and the bottom of the third upper die shell is embedded with the third upper die hard alloy; the third lower die consists of a third lower die hard alloy, a third lower die shell, a third lower die first cushion block, a third lower die core, a third lower die nut and a third lower die second cushion block, wherein the bottom of the third lower die shell is connected with the third lower die second cushion block through the third lower die nut, the third lower die hard alloy and the third lower die first cushion block are sequentially embedded in the third lower die shell from top to bottom, the third lower die core is embedded in the third lower die first cushion block, the top of the third lower die core penetrates through the third lower die hard alloy from bottom to top, and the bottom of the third lower die core penetrates through the third lower die second cushion block from top to bottom and is exposed out of the third lower die second cushion block.
The fourth process die comprises a fourth upper die and a fourth lower die, the fourth upper die consists of a fourth upper die shell, a fourth upper die-cutting side die and a fourth upper die fastening screw, a fourth upper die-cutting side die is embedded in the bottom of the fourth upper die shell, a fourth upper die fastening screw is arranged in the fourth upper die shell positioned on the right side of the fourth upper die-cutting side die, and the left end of the fourth upper die fastening screw is abutted against the fourth upper die-cutting side die; the fourth lower die consists of a fourth lower die hard alloy, a fourth lower die shell, a fourth lower die first cushion block, a fourth lower die core, a fourth lower die nut and a fourth lower die second cushion block, wherein the bottom of the fourth lower die shell is connected with the fourth lower die second cushion block through the fourth lower die nut, the fourth lower die hard alloy and the fourth lower die first cushion block are sequentially embedded in the fourth lower die shell from top to bottom, the fourth lower die core is embedded in the fourth lower die first cushion block, the top of the fourth lower die core penetrates through the fourth lower die hard alloy from bottom to top, and the bottom of the fourth lower die core penetrates through the fourth lower die second cushion block from top to bottom and is exposed out of the fourth lower die second cushion block.
The manufacturing method of the special-shaped welding bolt is characterized by comprising the following steps of: s1, firstly, putting a raw material into a first process die, and firstly, processing the bottom of the raw material; s2, subsequently placing the raw material which completes the first process die into a second process die, and processing the stud part of the raw material; s3, putting the raw material processed by the second process die into a third process die, and processing a nut part of the raw material; s4, putting the raw material which completes the processing of the third process die into a fourth process die, and cutting the nut part into the required special shape; s5, performing heat treatment on the formed special-shaped welding bolt; and S6, carrying out surface treatment on the bolts after the step S5 is completed.
Compared with the prior art, the method has the advantages that raw materials are sequentially processed through the four-process die, the process is simplified, each process can be independently processed, the utilization rate is greatly improved, and the processing efficiency is improved.
Drawings
Fig. 1 is a schematic structural diagram of an upper die in a first process according to the present invention.
Fig. 2 is a schematic structural diagram of a lower die in the first process of the present invention.
Fig. 3 is a schematic structural diagram of an upper die in the second process of the present invention.
Fig. 4 is a schematic structural diagram of a lower die in the second process of the present invention.
Fig. 5 is a schematic view of the structure of the upper die in the third year process of the present invention.
Fig. 6 is a schematic structural diagram of a lower die in a third process of the present invention.
Fig. 7 is a schematic structural diagram of an upper die in the fourth process of the present invention.
Fig. 8 is a schematic structural diagram of a fourth process lower die according to the present invention.
Referring to FIGS. 1 to 8, wherein 1 is a first upper die, 1' is a first lower die, 2 is a second upper die, 2' is a second lower die, 3 is a third upper die, 3' is a third lower die, 4 is a fourth upper die, 4' is a fourth lower die, 1-1 is a first upper die housing, 1-2 is a first upper die pad, 1-3 is a first upper die punch, 1' -1 is a first lower die cemented carbide, 1' -2 is a first lower die middle sleeve, 1' -3 is a first lower die housing, 1' -4 is a first lower die core, 1' -5 is a first lower die nut, 1' -6 is a first lower die rear pad, 2-1 is a second upper die spring, 2-2 is a second upper die housing, 2-3 is a second upper die pad, 2-4 is a second upper die pre-punch, 2-5 is a second upper die sex seed, 2' -1 is a second lower die cemented carbide, 2' -2 is a second lower die middle sleeve, 2' -3 is a second lower die first cushion, 2' -4 is a second lower die housing, 2' -5 is a second lower die sex, 2' -6 is a second lower die nut, 2' -7 is a second lower die second cushion, 3-1 is a third upper die housing, 3-2 is a third upper die cemented carbide, 3' -1 is a third lower die cemented carbide, 3' -2 is a third lower die housing, 3' -3 is a third lower die first cushion, 3' -4 is a third lower die core, 3' -5 is a third lower die nut, 3' -6 is a third lower die second cushion, 4-1 is a fourth upper die housing, 4-2 is a fourth upper die cutting die, 4-3 is a fourth upper die fastening screw, 4'-1 is the fourth lower die hard alloy, 4' -2 is the fourth lower die shell, 4'-3 is the fourth lower die first cushion block, 4' -4 is the fourth lower die core, 4'-5 is the fourth lower die nut, and 4' -6 is the fourth lower die second cushion block.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1 and 2, the first working procedure die comprises a first upper die 1 and a first lower die 1', wherein the first upper die 1 consists of a first upper die shell 1-1, a first upper die cushion block 1-2 and a first upper die punch rod 1-3, a groove is formed in the top of the first upper die shell 1-1, a first upper die cushion block 1-2 is embedded in the groove, a first upper die punch rod 1-3 is arranged in the first upper die shell 1-1 below the first upper die cushion block 1-2, and the top of the first upper die punch rod 1-3 is abutted against the lower surface of the first upper die cushion block 1-2; the first lower die 1 'comprises a first lower die hard alloy 1' -1, a first lower die middle sleeve 1'-2, a first lower die shell 1' -3, a first lower die core 1'-4, a first lower die nut 1' -5 and a first lower die rear pad 1'-6, wherein the first lower die middle sleeve 1' -2 and the first lower die rear pad 1'-6 are sequentially embedded in the first lower die shell 1' -3 from top to bottom, the first lower die middle sleeve 1'-2 is internally embedded with the first lower die hard alloy 1' -1, the first lower die hard alloy 1'-1 is internally embedded with a first lower die core 1' -4, the bottom of the first lower die core 1'-4 sequentially penetrates through the first lower die hard alloy 1' -1 and the first lower die rear pad 1'-6 from top to bottom, and the first lower die rear pad 1' -6 is connected with the first lower die shell 1'-3 through the first lower die nut 1' -5.
As shown in fig. 3 and 4, the second working procedure die comprises a second upper die 2 and a second lower die 2', wherein the second upper die 2 consists of a second upper die spring 2-1, a second upper die shell 2-2, a second upper die cushion block 2-3, a second upper die pre-punch 2-4 and a second upper die core 2-5, the second upper die cushion block 2-3 and the second upper die pre-punch 2-4 are sequentially embedded in the second upper die shell 2-2 from top to bottom, the second upper die cushion block 2-3 is in a T shape, the second upper die spring 2-1 is sleeved outside the T-shaped bottom of the second upper die cushion block 2-3, and the second upper die core 2-5 is embedded in the middle of the second upper die pre-punch 2-4; the second lower die 2' is composed of a second lower die hard alloy 2' -1, a second lower die middle sleeve 2' -2, a second lower die first cushion block 2' -3, a second lower die outer shell 2' -4, a second lower die core 2' -5, a second lower die nut 2' -6 and a second lower die second cushion block 2' -7, a second lower die second cushion block 2' -7 is arranged below the second lower die outer shell 2' -4, the second lower die outer shell 2' -4 is connected with the second lower die second cushion block 2' -7 through the second lower die nut 2' -6, the second lower die outer shell 2' -4 is internally embedded with the second lower die middle sleeve 2' -2 and the second lower die first cushion block 2' -3 from top to bottom in sequence, the second lower die middle sleeve 2' -2 is embedded with the second lower die hard alloy 2' -1, the second lower die core 2' -5 is embedded in the middle of the second lower die first cushion block 2' -3, and the second lower core 2' -5 penetrates through the second lower die 2' -3 from top to top of the second lower die sequentially from top to bottom of the second lower die 2' -3.
As shown in fig. 5 and 6, the third process mold in the present invention comprises a third upper mold 3 and a third lower mold 3', wherein the third upper mold 3 is composed of a third upper mold shell 3-1 and a third upper mold cemented carbide 3-2, and the bottom of the third upper mold shell 3-1 is embedded with the third upper mold cemented carbide 3-2; the third lower die 3 'consists of a third lower die hard alloy 3' -1, a third lower die shell 3'-2, a third lower die first cushion block 3' -3, a third lower die core 3'-4, a third lower die nut 3' -5 and a third lower die second cushion block 3'-6, wherein the bottom of the third lower die shell 3' -2 is connected with the third lower die second cushion block 3'-6 through the third lower die nut 3' -5, the third lower die hard alloy 3'-1 and the third lower die first cushion block 3' -3 are sequentially embedded in the third lower die shell 3'-2 from top to bottom, a third lower die core 3' -4 is embedded in the third lower die first cushion block 3'-3, the top of the third lower die core 3' -4 penetrates through the third lower die hard alloy 3'-1 from bottom to top, and the bottom of the third lower die core 3' -4 penetrates through the third lower die second cushion block 3'-6 from top to bottom and is exposed out of the third lower die second cushion block 3' -6.
As shown in fig. 7 and 8, in the present invention, a fourth process mold comprises a fourth upper mold 4 and a fourth lower mold 4', wherein the fourth upper mold 4 is composed of a fourth upper mold shell 4-1, a fourth upper mold side mold 4-2 and a fourth upper mold fastening screw 4-3, the bottom of the fourth upper mold shell 4-1 is embedded with the fourth upper mold side mold 4-2, the fourth upper mold shell 4-1 positioned on the right side of the fourth upper mold side mold 4-2 is internally provided with the fourth upper mold fastening screw 4-3, and the left end of the fourth upper mold fastening screw 4-3 is abutted against the fourth upper mold side mold 4-2; the fourth lower die 4 'consists of a fourth lower die hard alloy 4' -1, a fourth lower die shell 4'-2, a fourth lower die first cushion block 4' -3, a fourth lower die core 4'-4, a fourth lower die nut 4' -5 and a fourth lower die second cushion block 4'-6, wherein the bottom of the fourth lower die shell 4' -2 is connected with the fourth lower die second cushion block 4'-6 through the fourth lower die nut 4' -5, the fourth lower die hard alloy 4'-1 and the fourth lower die first cushion block 4' -3 are sequentially embedded in the fourth lower die shell 4'-2 from top to bottom, a fourth lower die core 4' -4 is embedded in the fourth lower die first cushion block 4'-3, the top of the fourth lower die core 4' -4 penetrates through the fourth lower die hard alloy 4'-1 from bottom to top, and the bottom of the fourth lower die core 4' -4 penetrates through the fourth lower die second cushion block 4'-6 from top to bottom and is exposed outside the fourth lower die second cushion block 4' -6.
When the invention is used, raw materials are sequentially processed through the four-process die, the process is simplified, each process can be independently processed, a series of processes such as hot heading, turning, drilling and the like are not needed, the utilization rate is greatly improved, and the processing efficiency is improved.
Claims (2)
1. The utility model provides a cold heading mould of dysmorphism welding bolt, includes first process mould, second process mould, third process mould, fourth process mould, characterized by: the second procedure die comprises a second upper die (2) and a second lower die (2'), the second upper die (2) consists of a second upper die spring (2-1), a second upper die shell (2-2), a second upper die pad block (2-3), a second upper die pre-punch (2-4) and a second upper die core (2-5), the second upper die shell (2-2) is internally and sequentially embedded with the second upper die pad block (2-3) and the second upper die pre-punch (2-4) from top to bottom, the second upper die pad block (2-3) is in a T shape, the second upper die spring (2-1) is sleeved outside the T-shaped bottom of the second upper die pad block (2-3), and the second upper die core (2-5) is embedded in the middle of the second upper die pre-punch (2-4); the second lower die (2 ') consists of a second lower die hard alloy (2 ' -1), a second lower die middle sleeve (2 ' -2), a second lower die first cushion block (2 ' -3), a second lower die outer shell (2 ' -4), a second lower die core (2 ' -5), a second lower die nut (2 ' -6) and a second lower die second cushion block (2 ' -7), the second lower die second cushion block (2 ' -7) is arranged below the second lower die outer shell (2 ' -4), the second lower die outer shell (2 ' -4) is connected with the second lower die second cushion block (2 ' -7) through a second lower die nut (2 ' -6), the second lower die middle sleeve (2 ' -2) and the second lower die first cushion block (2 ' -3) are sequentially embedded in the second lower die outer shell (2 ' -4) from top to bottom, the second lower die hard alloy (2 ' -1) is embedded in the second lower die middle sleeve (2 ' -2), the second lower hard alloy core (2 ' -1) is embedded in the second lower die middle part (2 ' -3) from top to bottom (2 ' -5), the bottom of the second lower die core (2 ' -5) sequentially passes through the second lower die first cushion block (2 ' -3) and the second lower die second cushion block (2 ' -7) from top to bottom; the first working procedure die comprises a first upper die (1) and a first lower die (1'), wherein the first upper die (1) consists of a first upper die shell (1-1), a first upper die pad block (1-2) and a first upper die punch rod (1-3), a groove is formed in the top of the first upper die shell (1-1), a first upper die pad block (1-2) is embedded in the groove, a first upper die punch rod (1-3) is arranged in the first upper die shell (1-1) below the first upper die pad block (1-2), and the top of the first upper die punch rod (1-3) is abutted to the lower surface of the first upper die pad block (1-2); the first lower die (1 ') consists of a first lower die hard alloy (1' -1), a first lower die middle sleeve (1 '-2), a first lower die shell (1' -3), a first lower die core (1 '-4), a first lower die nut (1' -5) and a first lower die rear pad (1 '-6), wherein the first lower die middle sleeve (1' -2) and the first lower die rear pad (1 '-6) are sequentially embedded in the first lower die shell (1' -3) from top to bottom, the first lower die hard alloy (1 '-1) is embedded in the first lower die middle sleeve (1' -2), the first lower die hard alloy (1 '-1) is embedded with a first lower die core (1' -4), the bottom of the first lower die core (1 '-4) sequentially penetrates through the first lower die hard alloy (1' -1) and the first lower die rear pad (1 '-6) from top to bottom, and the first lower die rear pad (1' -6) is connected with the first lower die shell (1 '-3) through the first lower die nut (1' -5); the third procedure die comprises a third upper die (3) and a third lower die (3'), wherein the third upper die (3) consists of a third upper die shell (3-1) and a third upper die hard alloy (3-2), and the bottom of the third upper die shell (3-1) is embedded with the third upper die hard alloy (3-2); the third lower die (3 ') consists of a third lower die hard alloy (3 ' -1), a third lower die shell (3 ' -2), a third lower die first cushion block (3 ' -3), a third lower die core (3 ' -4), a third lower die nut (3 ' -5) and a third lower die second cushion block (3 ' -6), wherein the bottom of the third lower die shell (3 ' -2) is connected with the third lower die second cushion block (3 ' -6) through the third lower die nut (3 ' -5), the third lower die hard alloy (3 ' -1) and the third lower die first cushion block (3 ' -3) are sequentially embedded in the third lower die shell (3 ' -2) from top to bottom, the third lower die first cushion block (3 ' -3) is embedded with the third lower die core (3 ' -4), the top of the third lower die core (3 ' -4) penetrates through the third lower die hard alloy (3 ' -1) from bottom to top, and the bottom of the third lower die core (3 ' -4) penetrates through the third lower cushion block (3 ' -6) from top to bottom and is exposed out of the third lower die; the fourth process die comprises a fourth upper die (4) and a fourth lower die (4'), the fourth upper die (4) consists of a fourth upper die shell (4-1), a fourth upper die-cutting side die (4-2) and a fourth upper die fastening screw (4-3), the bottom of the fourth upper die shell (4-1) is embedded with the fourth upper die-cutting side die (4-2), the fourth upper die fastening screw (4-3) is arranged in the fourth upper die shell (4-1) positioned on the right side of the fourth upper die-cutting side die (4-2), and the left end of the fourth upper die fastening screw (4-3) is abutted against the fourth upper die-cutting side die (4-2); the fourth lower die (4 ') is composed of a fourth lower die hard alloy (4 ' -1), a fourth lower die shell (4 ' -2), a fourth lower die first cushion block (4 ' -3), a fourth lower die core (4 ' -4), a fourth lower die nut (4 ' -5) and a fourth lower die second cushion block (4 ' -6), the bottom of the fourth lower die shell (4 ' -2) is connected with the fourth lower die second cushion block (4 ' -6) through the fourth lower die nut (4 ' -5), the fourth lower die hard alloy (4 ' -1) and the fourth lower die first cushion block (4 ' -3) are sequentially embedded in the fourth lower die shell (4 ' -2) from top to bottom, the fourth lower die core (4 ' -4) is embedded in the fourth lower die first cushion block (4 ' -3), the top of the fourth lower die core (4 ' -4) penetrates through the fourth lower die hard alloy (4 ' -1) from bottom to top, and the fourth lower die core (4 ' -6) is exposed out of the fourth lower die cushion block (4 ' -6).
2. A method of manufacturing a bolt using the cold heading die for a special-shaped welded bolt according to claim 1, characterized by comprising the steps of: s1, firstly, putting a raw material into a first process die, and firstly, processing the bottom of the raw material; s2, subsequently placing the raw material which completes the first process die into a second process die, and processing the stud part of the raw material; s3, putting the raw material processed by the second process die into a third process die, and processing a nut part of the raw material; s4, putting the raw material which completes the processing of the third process die into a fourth process die, and cutting the nut part into the required special shape; s5, performing heat treatment on the formed special-shaped welding bolt; and S6, carrying out surface treatment on the bolts after the step S5 is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811087278.1A CN109014002B (en) | 2018-09-18 | 2018-09-18 | Cold heading die for special-shaped welding bolt and bolt manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811087278.1A CN109014002B (en) | 2018-09-18 | 2018-09-18 | Cold heading die for special-shaped welding bolt and bolt manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109014002A CN109014002A (en) | 2018-12-18 |
| CN109014002B true CN109014002B (en) | 2024-03-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811087278.1A Active CN109014002B (en) | 2018-09-18 | 2018-09-18 | Cold heading die for special-shaped welding bolt and bolt manufacturing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109014002B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112756536A (en) * | 2020-12-29 | 2021-05-07 | 铭昊汽车金属零部件(广州)有限公司 | Forging die for automobile step parts |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000167638A (en) * | 1998-12-04 | 2000-06-20 | Tsukiboshi Seisakusho:Kk | Rotary upsetting device |
| CN205165700U (en) * | 2015-11-19 | 2016-04-20 | 日泰（上海）汽车标准件有限公司 | Flat cold -heading mould that fills up of hemisphere |
| CN207402048U (en) * | 2017-09-21 | 2018-05-25 | 承德石油高等专科学校 | Composite bolt two pass time performing hot-heading forming mold |
| CN209255727U (en) * | 2018-09-18 | 2019-08-16 | 日泰（上海）汽车标准件有限公司 | A kind of cold upsetting die of car for special-shaped weld bolt |
-
2018
- 2018-09-18 CN CN201811087278.1A patent/CN109014002B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000167638A (en) * | 1998-12-04 | 2000-06-20 | Tsukiboshi Seisakusho:Kk | Rotary upsetting device |
| CN205165700U (en) * | 2015-11-19 | 2016-04-20 | 日泰（上海）汽车标准件有限公司 | Flat cold -heading mould that fills up of hemisphere |
| CN207402048U (en) * | 2017-09-21 | 2018-05-25 | 承德石油高等专科学校 | Composite bolt two pass time performing hot-heading forming mold |
| CN209255727U (en) * | 2018-09-18 | 2019-08-16 | 日泰（上海）汽车标准件有限公司 | A kind of cold upsetting die of car for special-shaped weld bolt |
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| Publication number | Publication date |
|---|---|
| CN109014002A (en) | 2018-12-18 |
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